Combined tubing drain and jar



Aug. 4, 1953 J. 5. PAGE COMBINED TUBING DRAIN AND JAR 2 Sheets-Sheet 1 Filed April 21, 1947 Aug. 3 J. 5. PAGE 2,647,540

I COMBINED TUBING DRAIN AND JAR Filed April 21, 1947 2 Sheets-Sheet 2 Patented Aug. 4, 1953 COMBINED TUBING DRAIN AND JAR John S. Page, Long Beach, Calif., assignor to Page Oil Tools Inc., Long Beach, Calif., a corporation of California Application April 21, 1947, Serial No. 742,939

4 Claims.

This invention relates to a combined tubing drain and jar and it is a general object of the invention to provide a simple, effective and dependable structure for use in connection with tubing employed in a well.

It is common to produce a well through tubing, in which case the lower end portion of the tubing string is usually secured in the well casing by means of a tubing anchor. Tubing is usually employed to carry a pump and in practice it is cocasionally necessary to remove or withdraw the tubing from the well, in which case it is highly advantageous to have the tubing empty or drained. With the equipment that is in general use it is often difiicult to release the anchor which holds the tubing and it is not infrequent that the tubing cannot be drained, in which event it must be pulled while full of fluid.

A general object of my present invention is to provide a structure applicable to a string of tubing or the like to act as a drain or bleeder so that fluid can be drained from the tubing at will.

It is another object of my invention to provide a tubing drain of the general character referred to which is of such arrangement and construction that it can be operated as a jar or bumper sub to aid in dislodging or releasing an anchor or the like.

It is another object of my invention to provide a structure of the general character referred to which is under full control of the operator from the top of the well.

Another object of the invention is to provide a structure of the general character referred to which is of simple, practical construction involving few sturdy dependable parts and which is free of complicated devices or arrangement likely to fail or become fouled. A feature of my present construction is the absence of threaded parts requiring manipulation or operation in order to efiect operation of the structure.

The various objects and features of 'my invention will be fully understood from the following detailed description of a typical preferred form and application of the invention, throughout which description reference is made to the accompanying drawings, in which:

Fig. 1 is alongitudinal detailed view illustrating the structure of the present invention coupled in a tubing with parts being shown in section and the structure being illustrated in the normal position in which it occurs as the tubing is being employed to handle or pass fluid. Fig. 2 is a view similar to Fig. 1 showing the structure in an operated position, in which case the drain means embodied- 2 Q i in the structure is open, allowing fluid to drain from the tubing. Fi 3 is a transverse sectional view taken as indicated by line 33 on Fig. 1. Fig. 4 is a transverse sectional view taken as indicated by line 44 on Fig, 2. Fig. 5 is a transverse sectional view taken, as indicated by line 5-5 on Fig. 1. Fig. 6 is a transverse sectional view taken as indicated by line 66 on Fig. 2. Fig. 7 ,is a view illustrating the stem section of the structure separate from the other elements. Fig. 8 is a view illustrating the cap of the outer or body section separated from the other elements, and Fig. 9 is a transverse sectional view taken as indicated by line 9-9 on Fig. 1.

The structure of the present invention can be used in various situations. However, it is most practical as applied to tubing in use in a well, in which case it is inserted in the string of tubing a suitable distance above the anchor or other device that may be employed on or in connection with the tubing. In the drawings I have shown the structure of the present invention included in a string of tubing, in which case the upper portion Id of the tubing string is coupled to the upper end of the structure while the lower portion I I of the tubing string is coupled to the lower portion of the structure and the structure that I have provided serves as a fluid handling coupling or connection between the tubing sections.

The structure of the present invention includes, generally two telescopically related tubular sections, one an outer or body section A and the other an inner or stem section B, drain means C controlled by relative movement between the sections A and B preferably by relative longitudinal movement between the sections, control means D governing relative longitudinal movement between the sections operated or released by relative rotation between the sections, control means E governing relative rotation between the sections, and stop means F limiting relative rotation between the sections.

The outer or body section A in the form of the invention illustrated is the lower section of the structure and it includes, generally, a tubular body 12 carrying a cap it at its upper end and having a lower end portion I 4 with a threaded extension 55 to which the lower tubing section I! is connected as by means of a coupling H5, or the like. In the particular case illustrated the body extension 15 is formed separate from the otherparts of the body, in which case it is suitably joined thereto, as by welding W.

The cap i3 is preferably releasably connected with the upper end portion of the body 12. For

instance, it may be threaded thereto as for instance, threaded into the upper end of the body l2, as shown in the drawings. The cap as thus applied to the body l2 closes the upper end of a chamber X formed in or defined by the body l2. In the particular form of the invention illustrated the cap I3 has an enlarged upper end portion ilil which fits against the upper end of the body 12 when the cap is applied to the "body, as shown throughout the drawings.

The inner or stem section B of the structure includes, generally, a tubular stem po t/19x slida-bly carried in a passage or opening 2 I formed through the cap l3 concentric with opening 22 in the body section A. The stem is provided at its lower end with an enlargement or head 23 which operates in the chamber li provided in the body [2. The upper end portion of the stem 20 projects above the cap l3 and is suitably connected with the upper section H] of the tubing string, as by a suitable coupling 26, or the like. As "shown in the drawings, the coupling 28 may be threaded to the upper endof the stem 20 and may be considered a part of the present construction, since it carries a part of the means will :be hereinafter described.

ilhe drain means .6 controls flow or passage of ztiuid from a central fluid carrying passage all that extends through the structure coupling the tubing sections Hi and El. The drain means inv eludes, generally, a plug 3! carried by the stem section B and cooperating with a plug opening or socket -32 in the body section A. The plug ti is preferably in the form of a depending extension on the iower end of the head provided op -the stem "29 and the plug opening 32 is preferably a cylindrical central opening provided in he l wer l -ti n is o the dy to ma h ece the Plu A su tabl p c ing s a n such a a ack n in 3. i 'sie a'fa carried b he Plu t sea .i the o n ng 3 0 p fili iifi .l ifl flgl a oun t e plug W 1 1. 9.1 plu ngaged n hsplls ill Engagement of the plug ,3l in the opening 52 la ses o cuts off pmmsnication betwee th cen ra pa sag 6 and the hamber 2. in t e ba h J2 below th ead .2 on the stsmit- Whe the plug is en a ed th op n n as shown in Eie- .1 .1. 0 fluid m th in io f t sst u tats reach s h hamb H we when the plus .3! Wi hd awn from he mes i g .32 .sb wnfis- .2. h r i ree c mmuni at on o fluid rom h int r r-o th .stru tu s to th ch mbe The chambe i open i th r o the uctu by a s fitas learshown iis 1, Z ns 4 t e dr win silhe gon ml means TD e ins. slat re- Qn g 'ed i sl pi m n e e th se ion a iisll .hal s the sect on to h o cont a ted, a i l.-Fi l, n w h c e t e plu 3| i engaged in the opening 32 and this control means is operated or is releasable by relative rotation between the body and stem sections. Inthe form o th i v ntion illu ra n the raw ngs the sentmlmean D i clu e we or mor e d ng lugsflil ,on the gap 13 which lugs present down.- ward ac n hould all t a en o -ear u n the ten ed o fa e 14%?! of th head 33 when th sset qa :A and a e el ed a how in i 1. I thwa -1 s case il us rated I hav show usmet callyopposite de nd n lu s 4.1.

The head 2311s p vided rlithrsses e -fii hat xt nd downwardly n i item ts t :fac 9 he ce ses orrespond ng i n mber and astent with the lugs 4!! so that they receive the lugs when the lugs are moved into register with them and the sections are moved apart or are extended, as shown in Fig. 2. When the sections A and B are fully extended as shown in Fig, 2 the top face 42 of the head 23 engages or strikes the lower end 4 of the cap andij the sections are moved from {the normal position to the eX- tended position rapidlyor suddenly an effective hammering action is gained when the head strikes the cap. The hammering action that is gained between the body sections A and B serves as an up jar effective in releasing or jarring loose an anchor .or other device that may be employed connection with the tubing in which present structure is incorporated.

The .poutrpl means E governing relative rota tion between the sections A and B may be any suitable means that will serve to releasably retain or hold the body sections A and B positioned as shown in Fig. i. In the form of the invention illustrated in the drawings the means E involves a control collar fill, which collar is key-ed to one section and releasabl-y or irictionally coupled to the other section. The collar =58 is shown proaided with a pluralityof depending lugs 51 which engage in recesses 52 in the enlarged upper end portion it of thecap l3 when the section B is in the lowered position as shown in Fig. 1. The collar St is shown surrounding the coupling 26 which may be considered a part of section B and it set on the collar by .one or more set screws The .set screws are of such size and character as to establish a frictional engagement between the collar 59 and the coupling 26, the coupling .or connection being such that when sufficient rota-tire strain is applied to the upper section I (I of the tubing the stem section B willtur-n relative to the collar 5:?) in order to bring the lugs l -ii into register .withethe recesses The stop means F serves to limit relative rotation between the sections A and B and positively stops the sections in the two positions showninF-igs. land-2, and in Figs. 3 and 4 ofthe drawings. :Various arrangements and constructions may be employed in carrying .out the means F. flowever, it is advantageous to form this means by or through one or more depending stop riugs ti? on the plug 3i to cooperate with recesses 62 in the body section A at the bottom of the plug opening 32. The .stop lugs 80 and recesses 62 are arranged and related ,to be in Qqoperative engagement when the sections Aand Bare contracted, as shown in Fig. 1, and the lugs are disengaged from the recesses when the sec.- tions A and B a e e t nde as s w in The slu s fill engage .or stop against the .ends :64 of the recesses ,52 when the structure is .in :the normal position as shown in Fig. *1. 'When the sections are rotated relative to .each other from the normal position to a position where the lugs at register with the recesses .43, the stop lugs 69 en a e and are stopped by the ends 650i the EfiQQS$ :52

The stop means :Fas above described enables the operator I 15) assure proper positioning of the lugs 40 in engagement with the face .42 of the essen byroiatins the ubin section 1. in on 1 s able t wer is the con ol ecess brin the lu s 40 i t a sto ped 13.0. assis s? h re es es by rata ne -.l -.-tsl2i l ai -ae ma factu e th reassess-. or m ter ed n enla e.-

msm or lead 19 r ded on warmer and of the extension 15, which head occurs within the body portion I4 at the lower or inner end of the plug opening 32. In practice the body portion I4 is formed with an upwardly facing shoulder H against which the head rests and it is formed with a central passage l2 through which the extension 55 extends to project below the body, as clearly illustrated in Figs. 1 and 2 of the drawings.

In employing the structure that I have provided it is coupled in a string of tubing as shown throughout the drawings and when the structure is in the normal position shown in Fig. 1 the lugs rest on the top of head 23 holding the sections A and B in position with the plug 3| in the plug opening 32. In this position the plug 3| cuts ofi flow or communication from the interior of the structure through the drain ports 36. Prior to running the structure into the well the collar is set by means of the set screws 53 1 so that it holds the structure in the position shown in Fig. 1 against accidental release or operation. Whenever the operator wishes to operate the tool, that is, either to jar with it or to drain the tubing, he rotates the tubing section 10 causing the collar 50 to slip on the coupling 26 until the lugs 40 have been turned into register with the recesses 43, where they are stopped by the cooperation of lugs 60 with the ends of recesses 62. operator can pick up the tubing section 10 to disengage the plug 3i from the opening 32, with the result that the structure is open to allow flow from the tubing out through the drain ports 36. As the upward movement is rapid the head 23 will strike against the cap it causing a jar or blow efiective in releasing an anchor or other structure that may be used in connection with the tubing.

Having described only a typical preferred form and application of my invention, I do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modifications that may appear to those skilled in the art and fall within the scope of the following claims.

Having described my invention, I claim:

1. A structure applicable to a tubing including, a tubular body section with a cap and having a lateral drain opening, a tubular stem section slidably carried in the cap and having a head within the body section, a plug carried by the stem section normally engaged in a plug opening in the body section stopping flow through the opening, a lug on the cap normally engaging the head to hold the sections in the normal position, the head having a recess adapted to receive the lug to permit relative longitudinal movement between the sections to retract the plug from the plug opening, stop means stopping the stem relative to the body with the lug engaged with the head and stopping the stem relative to the body with the lug in register with the recess, and a collar keyed to one section and frictionally coupled to the other section normally yieldingly holding the sections against relative rotation.

2. A structure applicable to a tubing including, a tubular body section with a cap and having a lateral drain opening, a tubular stem section slidably carried in the cap and having a head within the body section, a plug carried by the stem section normally engaged in a plug opening in the body section stopping flow through the opening, a lug on the cap normally engaging the head to hold the sections in the normal position, the

With the parts thus positioned the iii head having a recess adapted to receive the lug to permit relative longitudinal movement between the sections to retract the plug from the plug opening, stop means stopping the stem relative to the body with the lug engaged with the head and stopping the stem relative to the body with the lug in register with the recess, and a collar positioned on the stem section by a set screw and having a lug engaged a recess in the body section when the sections are in the normal position.

3. A structure applicable to a well tubing including, two telescopically related tubular sections adapted to rotate and to shift longitudinally relative to each other and one adapted to be fixed to the tubing, one of the sections being a female section and the other a male section entering and terminating in the female section, drain means closed when the sections are in a normal position and adapted to open and discharge fiuid from the structure when the sections are shifted longitudinally relative to each other from the normal position and including a drain port in one section only, control means within the female section adapted to releasably hold the sections against relative longitudinal movement and releasable by relative rotation between the sections, and means governing relative rotation between the sections from the normal position including a lock collar carried on the male section at one end of the female section, the collar being slidably keyed to one section and frictionally engaged with the other section to rotate relative thereto only when deliberately operated by torque applied through the tubing.

4. A structure applicable to a well tubing including, two telescopically related tubular sections adapted to rotate and to shift longitudinally relative to each other and adapted to be fixed to the tubing, one of the sections being a female section and the other being a male section entering in the female section from one end thereof and terminating therein, drain means closed when the sections are in a normal position and adapted to open and discharge fluid from the structure when the sections are shifted longitudinally relative to each other from the normal position, control means within the female section releasably holding the sections against relative longitudinal movement and releasable by rotation between the sections, and means governing relative rotation between the sections including a lock collar on the male section adjacent said end of the female section and slidably keyed to one section against rotation relative thereto and frictionally set on the other section by a set screw to rotate relative thereto upon application of a predetermined force from the tubing.

JOHN S. PAGE.

References Cited in the file of this patent UNITED STATES PATENTS Number 

